Process of graining



P. A. GSTALDER. PROCESS OF GRAINING. FILED JUN I I9.

347 02 Patented July 20, 1920.

2 SHEEIS-SHEEI i.

INVENTOR,

A TTORNE Y5.

P. A. GSTALDER. PROCESS OF GRAINING.

, APPLICATION FILED JUNE 18, 1919- I -'1 347 028 Patented July 20, 1920.

2 SHEEIS-SHEEI 22 T H FIPE Tfi IFHiT I R EhF INVENTOR.

A T TORNE Y'SI UNITED STATES PATENT OFFICE.

PAUL A. GSTALDER, or PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO THE OHIO VARNISH COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

rnoonss or GRAINING.

Specification of Letters Patent.

Patented July 20, 1920.

A plication filed June is, 1919. Serial No. 304,984.

To all whom it may comm Be it known that I, PAUL A. GSTALDER, a citizen of the United States, residing at Pittsbur h, in the county of Allegheny and State ofIPenhsylvania, have invented a certain new and useful Improvement in Processes of G'raining, of which the followingis a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to a process of treating surfaces to give them a grained efiect corresponding to the natural grain of wood. The Object is to provide for increasing the resemblance by applying to the surfaces certain marking corresponding to the peculiarities of natural wood, and to vary the marking with successive strips of Wood, and to do this in a manner which shall be simple and economically carried out.

In operating my method I first apply a ground coat to the surface and allow it to dry, then apply over this a graining compound which while Wet is manipulated by a tool in the form of a roller with a surface which has the characteristics of both absorbing and printing. In this way I remove certain reglons of the wet coat and thereafter while this removed portion is carried by the tool I roll the tool over the dry untreated portion of the coat, and thus print or deposit on it marks corresponding to the part removed. The result of the operation is that on the parts where the roller absorbs the material I produce an imitation of light flakes, while on the parts where the roller prints with the removing compound I produce an imitation of dark flakes.

In carrying out the operation I apply the graining compound to at least two boards. I then roll the tool over the second board to remove the compound therefrom while the board is wet. By the time the second board has been thus treated the first board is substantially .dry, while the removing compound is retained in a wet condition on the roller. I then roll this roller over the first board, printing on it by means of the material removed from the second board. This gives an imitation of dark flakes.

Over the surface treated, as explained, I apply a coat of varnish which brings out the configured characteristics given to the graining compound. Associated with the operation described by the roller, may be the usual operation of stippling with a brush before the roller is used or blending with a comb or brush afterward, or both operations, if desired.

My invention is illustrated in the drawings hereof, wherein Figure 1 is a plan of the graining roller, the handle of the bail being broken away; Fig. 2 is an end view of the roller shown in Fig. 1; Fig. 3 is a development of the surface of the roller; Fig. f is a plan of two boards supposed to have been treated with a ground coat and surmounting yellow graining compound; Fig. 5 is a plan of the same boards after the roller of Figs. 1, 2 and 3 has been rolled across the second strip and the graining compound thereby removed in certain regions; Fig. 6 is a plan of the same boards after the roller carrying previously removed compound from the second strip has been rolled over the first strip. Referring by reference letters to Figs. 1, 2 and 8, A indicates the body of the roller, which is a cylinder of suitable material. B is a bail in which the roller is journaled and which has a handle Z). G indicates a rubber pad surmounting the surface of the roller and having irregular projections 0. D indicates an absorbent surface which may well be made of chamois and which surmounts the rubber pad and its projections, the engaging portion of this chamois surface being indicated at d.

In Figs. 4, 5 and 6, the cross hatching designated F indicates the yellow graining compound applied to the boards. The white portions G indicate regions where the yellow graining compound has been absorbed and removed by the roller. The double cross hatched portion H indicates regions where the graining compound absorbed by the roller is applied to the previously laid graining compound. The graining compound, it is to be understood, is of an absorbent nature so that when varnish is applied over it the characteristic configuration is brought out. This varnish may be of natural color, or a colored varnish may be used, as desired.

It will be seen that by the process described I produce some strips which carry an imitation of light flaking and other strips which carry an imitation of dark flaking. These strips may be arranged alternately or in irregular succession as desired; the result is to give the whole floor, or other surface treated, a close imitation of natural wood, which sometimes runs with light flakes and sometimes with dark.

Having thus described my invention what I claimis:

1. The proccssof grainihg comprisingapplying graining compound to a surface, removing certain regions of the compound, and then applying additional compound to certain regions of the untreated compound.

2. The process of graining consisting of applying compound to a surface, removing such compound in certain regions of a portion of the surface, allowing the remainder 4. The process of graining consisting of applying graining compound to a surface, rolling over a portion of such surface while it is weta roller having absorbent projections, allowing another portion of the surface to dry, then again rolling the roller over i such other portion to deposit on it the material which the roller previous application. 7 A

5. The process of graining, consisting of applying a graining compound to a 'surface, alternately treating the wet compound has removed on a by a roller to remove portions of the surface and the dry compound by the roller to apply the wet portions which the roller has removed on a'preceding application. V v

6. In a'graining process, the alternate steps of'employing a graining tool having elastic projections surmounted'with an absorbent ,surface 'to remove wet portions of the graining material and to apply such wiped off portions to a part'of the surface where the material has become dried.

In testimony whereof I'hereunto affix my signature.

A. GSTALDER. 

